It also weighs heavy just what the TNN or TSB is. The following are all out of warrnety issues. And assume that you did NOT know about them in warrenty. IF you did and were lazy then that is another whole topic WE really do not want to open. Some are minor adjustments which after a bit of time can still be done for free. As they are simple and low cost and can be charged off as CUSTOMER GOODWILL. And even done while doing other work in a related area. Like your having a Throttlebody cleanned and teh tech does the TBS where they move the slots on the TPS by filing them out and gets more travel and more adjustment. Thous smoother tip in off idle. and he does that for free. Others are things that if you did not have it done back when and the car ran fine. NOW is not the time to get a freebe for life adjustment, just because the car now needs work and adjustment out of warrenty at 70,000. Still others are MAJOR items and should have been done back when period. If they were not and now show up it is a judgment call as to WHOM is responceable. Something like BALL JOINTS that were a known loose item on a vech by 30,000 in most cases, but were not done as they the ones in yours were fine. DOES NOT get you new ball joints at 60,000-70,000 done free. Others are a plain and simple freebe for life as they are a MAJOR safety issue. But that has to be proven before you do not have to pay for the repair YOU REQUEST. At the time of pickup is NEVER the time to play whom is paying. And if you do, most times you end up paying and then getting reemburst later if at all. And you have to plead your case to do so. So it is not all cut and dry alot.